def print_models(unprinted_designs_1,completed_models_1):
    """
    模拟打印每个设计，直到没有未打印的设计为止
    打印每个设计后，都将其移到列表completed_models
    """
    while unprinted_designs_1:
        current_design=unprinted_designs_1.pop()
        print(f"printing model:{current_design}")
        completed_models.append(current_design)
def show_completed_models(completed_models):
    """显示打印好的模型"""
    print(f"\nthe following models have been printed:")
    for completed_model in completed_models:
        print(completed_model)

unprinted_designs=['phone case','robot pendant','dodecahedron']
completed_models=[]



